On [this page](http://jeroenthesseling.com/gear.htm) of Jeroen Thesseling's w... more

On this page of Jeroen Thesseling's website, it lists a Warwick Thumb NT 7 String as one of his basses.
And Jeroen says this about the NT 7 in this interviw:
"You have to get used to this instrument because the neck is broader and it’s heavier. It’s even heavier than the regular 6-string neck-thru Thumb. It’s quite a job to handle the instrument but it’s worth it."